Question

Find the sum of the first 10 terms of the following series to the nearest Integra 3, 5, 25/3,...​

Answer 1

S(10)=3*(1-(5/3)^10)/(1-5/3)

Explanation:

It is Geometric series with r:

r=5/3=(25/3)/5=5/3

a=3

Sum of G.S. in formula:

S(n)=a(1-r^n)/(1-r)

S(10)=3*(1-(5/3)^10)/(1-5/3)

=246.5725...